JPH01300935A - Urethane gel for ultrasonic diagnostic apparatus - Google Patents
Urethane gel for ultrasonic diagnostic apparatusInfo
- Publication number
- JPH01300935A JPH01300935A JP63131520A JP13152088A JPH01300935A JP H01300935 A JPH01300935 A JP H01300935A JP 63131520 A JP63131520 A JP 63131520A JP 13152088 A JP13152088 A JP 13152088A JP H01300935 A JPH01300935 A JP H01300935A
- Authority
- JP
- Japan
- Prior art keywords
- urethane gel
- gel
- isocyanate
- urethane
- polyol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229920005862 polyol Polymers 0.000 claims abstract description 18
- 150000003077 polyols Chemical class 0.000 claims abstract description 18
- 239000012948 isocyanate Substances 0.000 claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 13
- 230000035515 penetration Effects 0.000 claims abstract description 7
- 125000000524 functional group Chemical group 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 claims 1
- 230000000379 polymerizing effect Effects 0.000 abstract description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 abstract description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002604 ultrasonography Methods 0.000 description 11
- 239000000523 sample Substances 0.000 description 7
- 239000005062 Polybutadiene Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 229920002857 polybutadiene Polymers 0.000 description 5
- 239000003085 diluting agent Substances 0.000 description 4
- 238000002592 echocardiography Methods 0.000 description 4
- 239000004359 castor oil Substances 0.000 description 3
- 235000019438 castor oil Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000012024 dehydrating agents Substances 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- LEUWBMAQQQENOO-UHFFFAOYSA-N 4-(4-chlorophenyl)-6-methyl-2-oxo-3,4-dihydro-1h-pyridine-5-carboxylic acid Chemical compound C1C(=O)NC(C)=C(C(O)=O)C1C1=CC=C(Cl)C=C1 LEUWBMAQQQENOO-UHFFFAOYSA-N 0.000 description 1
- GOJCZVPJCKEBQV-UHFFFAOYSA-N Butyl phthalyl butylglycolate Chemical compound CCCCOC(=O)COC(=O)C1=CC=CC=C1C(=O)OCCCC GOJCZVPJCKEBQV-UHFFFAOYSA-N 0.000 description 1
- RDOFJDLLWVCMRU-UHFFFAOYSA-N Diisobutyl adipate Chemical compound CC(C)COC(=O)CCCCC(=O)OCC(C)C RDOFJDLLWVCMRU-UHFFFAOYSA-N 0.000 description 1
- 208000010201 Exanthema Diseases 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002009 allergenic effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229940031769 diisobutyl adipate Drugs 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000012985 polymerization agent Substances 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の技術分野）
本発明は超音波診断装置用ウレタンゲル、さらに詳細に
は超音波の減衰性が少なく、かつ超音波の伝達速度の大
きな超音波診断装置用ウレタンゲルに関する。Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to a urethane gel for ultrasonic diagnostic equipment, and more particularly, to a urethane gel for ultrasound diagnostic equipment that has low attenuation of ultrasound waves and a high transmission speed of ultrasound waves. Regarding gel.
（従来技術）
超音波診断装置は、超音波を身体に照射し、所定の深さ
より反射した前記超音波を受信して身体内の状態を映像
として捉える装置であり、衣料用の診断装置として広く
使用されるようになってきている。(Prior art) An ultrasound diagnostic device is a device that irradiates the body with ultrasound waves and receives the ultrasound waves reflected from a predetermined depth to capture the internal state of the body as an image, and is widely used as a diagnostic device for clothing. It is starting to be used.
このような超音波診断装置を使用する場合、超音波を受
信し、かつ受信する探触子１を身体２の所定部分に当接
し、超音波の発信および受信を行なうものである。この
身体２の表面には微細な凹凸ないし湾曲があるため、前
記身体表面と探触子１の接触は直接接触する部分２１と
空気層２２を介して直接接触する部分に分けられること
になる。When using such an ultrasonic diagnostic apparatus, the probe 1 that receives and receives ultrasonic waves is brought into contact with a predetermined part of the body 2, and the ultrasonic waves are transmitted and received. Since the surface of the body 2 has minute irregularities or curvatures, the contact between the body surface and the probe 1 is divided into a direct contact portion 21 and a direct contact portion via an air layer 22.
このように空気層２２を介して超音波を発信−受信する
と、得られる映像が不正確になると共に、不鮮明になる
という欠点があった。When ultrasonic waves are transmitted and received through the air layer 22 in this manner, the resulting images are inaccurate and unclear.
このような欠点を解決するため、第２図に示すように、
たとえば水、油のような流体を収納した袋３あるいは水
槽などの介在物を介して探触子１を身体に接触させ、空
気層を介さずに超音波の発信および受信をすることが行
なわれている。このような袋３は身体２の形状に応じて
種々変形できるため、空気層を介して接触することがな
くなり、このためえられる映像は空気層の影響を受けな
いという利点がある。In order to solve these drawbacks, as shown in Figure 2,
For example, the probe 1 is brought into contact with the body through an intervening object such as a bag 3 containing a fluid such as water or oil or a water tank, and ultrasonic waves are transmitted and received without going through an air layer. ing. Since such a bag 3 can be variously deformed according to the shape of the body 2, there is no contact through an air layer, and therefore, there is an advantage that the image obtained is not affected by the air layer.
しかしながら、このような水袋３ないし水槽には下記の
ような欠点があった。However, such a water bag 3 or a water tank has the following drawbacks.
■氷袋を支えるスタンドが必要になる、■多重エコーの
現われない氷袋の材質を選択するのか困難である、この
ため多重エコーが水の深さ（探触子と患者管の距離）の
部分に第１のものか現われることに着目し、氷袋を大き
くする必要を生しる、
■前記氷袋の水の取り替えに手間がかかる、■水槽の場
合は、水をこぼさないようにするため、探触子に対し下
にこないようにする必要があるが、このなめ患者に無理
な姿勢を強いることがある、
■患者が動いたときに水か漏れたり、氷袋が破れたりし
て、患者が濡れる心配かある。■ A stand is required to support the ice bag. ■ It is difficult to select a material for the ice bag that does not cause multiple echoes. Therefore, multiple echoes occur at the depth of the water (distance between the probe and the patient tube). Focusing on the fact that the first ice cube appears in , it is necessary to avoid lowering the transducer, but this may force the patient into an awkward position. - When the patient moves, water may leak or the ice bag may tear. I'm worried about the patient getting wet.
（発明の概要）
本発明は上述の点に管が明されたものであり、氷袋に比
較して収り扱いが容易で、水などの流体を取り替える手
間も扶養であるばかりでなく、かつ超音波の減衰もわず
かで、シャープな映像が得られるゲル状物質を提供する
ことを目的とする。(Summary of the Invention) The present invention solves the above-mentioned problems by using a tube, which is easier to store and handle than an ice bag, saves the trouble of replacing fluids such as water, and The aim is to provide a gel-like material that has minimal attenuation of ultrasonic waves and allows sharp images to be obtained.
上述のような目的を達成するため、本発明による超音波
診断装置用ウレタンゲルは、水分量が５００ｐｐｍ以下
のポリオールを、反応する官能基がほぼ当量のイソシア
ネートと重合せしめたゲル状物であって、かつ針入度が
５〜３５０であることを特徴としている。In order to achieve the above-mentioned object, the urethane gel for ultrasound diagnostic equipment according to the present invention is a gel-like material in which a polyol with a water content of 500 ppm or less is polymerized with an isocyanate having approximately the same amount of reactive functional groups. , and has a penetration degree of 5 to 350.
本発明による超音波診断装置用ウレタンゲルによれば、
氷袋支持装置が不要であり、取り扱いが極めて容易であ
ると共に、患者に無理な格好を強いることなく、楽に診
断を受けさせることができる。さらに密着性が良好で、
多重エコーの発生も防止でき、氷袋もしくは水槽のよう
に患者か動いたときに水が漏れたり、氷袋が破れたりし
て、患者が濡れる心配がないという利点がある。さらに
、減衰量が少なく、かつ適度の柔軟性を有していると共
にゲル状であるため、氷袋のように取り扱いが難しくな
ることがなく、患者との密着性も良好である。According to the urethane gel for ultrasound diagnostic equipment according to the present invention,
There is no need for an ice bag support device, and it is extremely easy to handle, and patients can be easily diagnosed without forcing them to wear unreasonable clothing. Furthermore, the adhesion is good,
It also prevents the occurrence of multiple echoes, and has the advantage that there is no need to worry about the patient getting wet due to water leaking or the ice bag breaking when the patient moves, such as with an ice bag or a water tank. Furthermore, since it has a small amount of attenuation, has appropriate flexibility, and is gel-like, it is not difficult to handle unlike ice bags, and it has good adhesion to the patient.
（発明の詳細な説明） 本発明をさらに詳しく説明する。(Detailed description of the invention) The present invention will be explained in more detail.
本発明によれば、水分量が５００ｐｐｍ以下のポリオー
ルを、反応する官能基がほぼ等量のイソシアネートと重
合せしめたウレタンゲルを使用している。According to the present invention, a urethane gel is used in which a polyol having a water content of 500 ppm or less is polymerized with an isocyanate having approximately the same amount of reactive functional groups.
このような本発明によるウレタンゲルは、周知のように
イソシアネート分とポリオール分、そしてこれを希釈す
るための油類、触媒などを含むウレタン溶液を重合させ
、ゲル化したものである。As is well known, the urethane gel according to the present invention is obtained by polymerizing and gelling a urethane solution containing an isocyanate component, a polyol component, an oil for diluting the same, a catalyst, and the like.
このようなウレタン溶液のイソシアネート分は本発明に
おいて基本的に限定されるものではない。The isocyanate content of such a urethane solution is not fundamentally limited in the present invention.
通常のウレタン樹脂溶液の製造に使用できるイソシアネ
ートを有効に使用することができる。Isocyanates that can be used in the production of ordinary urethane resin solutions can be effectively used.
このようなイソシアネート分としては、たとえばトリレ
ンジイソシアネート、４，４″ジフエニルメタンジイソ
シアネートなどの一種以上を有効に使用することができ
る。As such an isocyanate component, one or more types such as tolylene diisocyanate and 4,4'' diphenylmethane diisocyanate can be effectively used.
本発明において、特に重合剤であるポリオールが重要で
ある。このポリオールは、水分含量が５００ ｐｐｍ以
下のものを使用する必要がある。５００ ｐｐｍを越え
た水分含量であると、超音波が減衰しやすく、良好な画
像が得られにくいからである。In the present invention, polyol, which is a polymerization agent, is particularly important. This polyol must have a water content of 500 ppm or less. This is because if the water content exceeds 500 ppm, ultrasonic waves are likely to be attenuated, making it difficult to obtain a good image.
即ち、本発明者らは、上述のような超音波診断装置用の
介在物を研究した結果ポリオール中に水分があると、超
音波の減衰が大きくなり、この結果映像が鮮明にならな
いことを見いだしたのである。That is, as a result of researching the inclusions for ultrasonic diagnostic equipment as described above, the present inventors found that when there is water in polyol, the attenuation of ultrasonic waves becomes large, and as a result, images are not clear. It was.
この理由は、必ずしも明確ではないが、水分子ないしＯ
Ｈ基がウレタンゲルと別位相を形成する結果、ウレタン
ゲル−水層−ウレタンゲルと超音波が通過していくとき
に、超音波の吸収あるいは屈折などが生じ、結果として
超音波の減衰が大きくなり、画像が不鮮明になるものと
考えられる。The reason for this is not necessarily clear, but water molecules or O
As a result of the H group forming a different phase from the urethane gel, absorption or refraction of the ultrasound occurs when the ultrasound passes through the urethane gel - water layer - urethane gel, resulting in a large attenuation of the ultrasound. It is thought that the image becomes unclear.
このようなポリオールとしては、ポリエステル系、ポリ
アクリル系、ポリブタジェン系あるいはポリエーテル系
のポリオールを好ましく使用することができる。特に、
加水分解しにくいポリブタジェン系ポリエーテル系ポリ
オールが望ましい。As such polyols, polyester-based, polyacrylic-based, polybutadiene-based, or polyether-based polyols can be preferably used. especially,
A polybutadiene-based polyether polyol that is difficult to hydrolyze is desirable.
一方、ポリアミン系ポリオールは、身体にかぶれなどを
起こす恐れがあり、好ましくない。On the other hand, polyamine-based polyols are undesirable because they may cause a rash on the body.
このようなポリオール分としては、たとえばヒマシ油、
ポリブタジェンなどの一種以上を例としてあげることが
できる。Examples of such polyols include castor oil,
Examples include one or more of polybutadiene and the like.
このようなポリオールは、たとえばモレキュラシーブな
どの脱水剤を使用して脱水するか、加熱、真空吸引して
脱水し、５００ｐｐｍ以下にする。脱水剤を使用する場
合、製造されたウレタンゲルの性能を悪化させるもので
あってはならないことは明らかである。Such a polyol is dehydrated using a dehydrating agent such as molecular sieve, or by heating and vacuum suction to reduce the amount of water to 500 ppm or less. It is clear that if a dehydrating agent is used, it must not impair the performance of the urethane gel produced.
このイソシアネート分とポリオールの混合量は、反応す
る官能基がほぼ等量になるようにする。このように官能
基をほぼ等量にすることによって、重合され、生成され
たポリウレタン樹脂はゲル状になるからである。The amount of the isocyanate component and the polyol to be mixed is adjusted so that the amount of functional groups to be reacted is approximately equal. This is because by making the functional groups approximately equal in amount in this way, the polyurethane resin that is polymerized and produced becomes gel-like.
このようなウレタン溶液に対し、ウレタンゲルの粘土を
調整するために添加される希釈剤としては、たとえば、
ジブチルフタレート、ブチルフタリルブチルグリコレー
ト、ジイソブチルアジペート、ジ−ｎ−ヘキシルアゼレ
ートなどの可塑剤や鉱物油などを使用することができる
。Examples of diluents added to such a urethane solution to adjust the clay of the urethane gel include:
Plasticizers such as dibutyl phthalate, butylphthalyl butyl glycolate, diisobutyl adipate, di-n-hexyl azelate, mineral oil, and the like can be used.
このような希釈剤を添加することによって、生成される
ウレタンゲルの針入度を５〜３５０に調整する。ウレタ
ンゲルの針入度が５未満であるとウレタンゲルが硬くな
り過ぎて身体に密着しにくく、一方、３５０を越えると
柔らかすぎて取り扱いが困難になるからである。By adding such a diluent, the penetration degree of the produced urethane gel is adjusted to 5 to 350. If the penetration degree of the urethane gel is less than 5, the urethane gel will be too hard and difficult to adhere to the body, whereas if it exceeds 350, it will be too soft and difficult to handle.
また、重合触媒としては、従来この種のウレタンの重合
に使用される触媒を有効に使用することができる。たと
えば、アミン系、金属系などの触媒を有効にすることが
可能である。Furthermore, as the polymerization catalyst, catalysts conventionally used for the polymerization of this type of urethane can be effectively used. For example, amine-based, metal-based, etc. catalysts can be effective.
このような樹脂液を重合させて製造されたウレタンゲル
派、１４５０〜１４９０ ｍ／ｓの音速を有し、音の減
衰率は１ 、３１ ｄＢ／ｃｍ以下と良好な結果を示し
ている。The urethane gel produced by polymerizing such a resin liquid has a sound velocity of 1450 to 1490 m/s and a sound attenuation rate of 1.31 dB/cm or less, showing good results.
以下、実施例について説明する。Examples will be described below.
実施例
４．４″ヅフエニルメクヅイソシアネー）
３０重量部ポリブタジェン・ヒマシ油
１１０重量部可塑剤・希釈剤 ２０
０重量部触媒 ０．１重量
部を１００°Ｃに加熱し、７６０ ｍｍＨｇで真空吸引
の手段で充分脱水し、１１００ｐｐの水分含量としたポ
リブタジェン・ヒマシ油系ポリオールおよび希′釈剤に
、イソシアネート分として４，４″ジフエニルメタンジ
インシアネートを添加し、最後に触媒を加えて、良く脱
泡したのち、１００ｍｍＸ ２００ｍｍＸ１０ｍｍの型
に流し込み、硬化させた。Example 4. 4″Duphenylmekdu Isocyanate)
30 parts by weight polybutadiene/castor oil
110 parts by weight Plasticizer/diluent 20
0 parts by weight of catalyst 0.1 parts by weight were heated to 100°C and thoroughly dehydrated by means of vacuum suction at 760 mmHg to give a water content of 1100 pp. An isocyanate component was added to polybutadiene/castor oil-based polyol and diluent to a water content of 1100 pp. 4,4'' diphenylmethane diincyanate was added thereto, and finally a catalyst was added and the mixture was well defoamed, then poured into a mold of 100 mm x 200 mm x 10 mm and cured.
硬化したポリウレタンゲルの針入度は１３０、減衰率は
０．５ｄＢ／ｃｍであった。The cured polyurethane gel had a penetration of 130 and an attenuation rate of 0.5 dB/cm.
第３図に、本発明による超音波診断用介在物の音速と減
衰率の結果を示す。符号１〜４は本願発明の介在物であ
る。比較として、第３図に市販の超音波診断装置用介在
物の減衰率と音速の関係を符号５．６．７として示す。FIG. 3 shows the results of the sound velocity and attenuation rate of the ultrasonic diagnostic inclusion according to the present invention. Reference numerals 1 to 4 are inclusions of the present invention. For comparison, FIG. 3 shows the relationship between the attenuation rate and the sound speed of a commercially available inclusion for an ultrasonic diagnostic apparatus, designated by reference numeral 5.6.7.
上記の結果より明らかなように、本発明によるウレタン
ゲルによれば、減衰率および音速の両方とも従来のもの
に比較して良好であった。また、得られる映像も従来の
ものに比較して遜色なかつな。As is clear from the above results, the urethane gel according to the present invention had better attenuation rate and sound velocity than the conventional one. In addition, the images obtained are comparable to conventional ones.
（発明の効果）
以上説明したように、本発明による超音波診断装置用ウ
レタンゲルによれば、氷袋支持装置が不要であり、取り
扱いが極めて容易である。さらに、密着性か良好で、多
重エコーの発生も防止でき、氷袋もしくは水槽のように
患者が動いたときに水漏れしたり、氷袋が破れたりして
、患者が濡れる心配がないという利点がある。さらに減
衰量が少なく、かつ適度の柔軟性を有しており、被検体
に良くなじみ、湾曲の強い部分にもよく密着し、ゲル状
であるため、氷袋のように取り扱いが難しくなることが
なく、皮膚に炎症をおこしにくい非アレルギー性である
という利点もあり、かつ患者との密着性も良好である。(Effects of the Invention) As described above, the urethane gel for ultrasonic diagnostic equipment according to the present invention does not require an ice bag support device and is extremely easy to handle. Furthermore, the adhesion is good, preventing multiple echoes from occurring, and there is no need to worry about the patient getting wet due to water leakage or tearing of the ice bag when the patient moves, as with ice bags or water tanks. There is. Furthermore, it has low attenuation and appropriate flexibility, so it conforms well to the subject and adheres well to strongly curved areas, and because it is gel-like, it does not become difficult to handle like an ice bag. It also has the advantage of being non-allergenic and does not easily cause skin irritation, and also has good adhesion to patients.
第１図は身体に探触子を当接したときの概念図、第２図
は探触子を氷袋を介して当接したときの概念図、第３図
は本発明によるウレタンゲルの減衰率と音速の関係を示
す図である。
１・・・探触子、２・・・身体、３・・・氷袋。Figure 1 is a conceptual diagram when the probe is in contact with the body, Figure 2 is a conceptual diagram when the probe is in contact with the body through an ice bag, and Figure 3 is the attenuation of the urethane gel according to the present invention. FIG. 3 is a diagram showing the relationship between rate and sound speed. 1...probe, 2...body, 3...ice bag.
Claims (1)
る官能基がほぼ等量のイソシアネートと重合せしめたゲ
ル状物であって、かつ針入度が５〜３５０であることを
特徴とする超音波診断装置用ウレタンゲル。(1) Ultrasonic diagnosis characterized by a gel-like material in which a polyol with a water content of 500 ppm or less is polymerized with an approximately equal amount of isocyanate and a functional group that reacts with the polyol, and has a penetration degree of 5 to 350. Urethane gel for equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63131520A JPH01300935A (en) | 1988-05-31 | 1988-05-31 | Urethane gel for ultrasonic diagnostic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63131520A JPH01300935A (en) | 1988-05-31 | 1988-05-31 | Urethane gel for ultrasonic diagnostic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01300935A true JPH01300935A (en) | 1989-12-05 |
Family
ID=15059975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63131520A Pending JPH01300935A (en) | 1988-05-31 | 1988-05-31 | Urethane gel for ultrasonic diagnostic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01300935A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02131753A (en) * | 1988-11-11 | 1990-05-21 | Takiron Co Ltd | Coupler for probe for ultrasonic diagnosis |
| WO2015080236A1 (en) * | 2013-11-29 | 2015-06-04 | Canon Kabushiki Kaisha | Phantom used for acoustic diagnostic apparatus |
-
1988
- 1988-05-31 JP JP63131520A patent/JPH01300935A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02131753A (en) * | 1988-11-11 | 1990-05-21 | Takiron Co Ltd | Coupler for probe for ultrasonic diagnosis |
| WO2015080236A1 (en) * | 2013-11-29 | 2015-06-04 | Canon Kabushiki Kaisha | Phantom used for acoustic diagnostic apparatus |
| US9877704B2 (en) | 2013-11-29 | 2018-01-30 | Canon Kabushiki Kaisha | Phantom used for acoustic diagnostic apparatus |
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